Dual blade ski runner



FIG. 1 is a rear view of a dual blade ski runner showing my new design;

FIG. 2 is a front view;

FIG. 3 is a bottom plan view;

FIG. 4 is a top plan view;

FIG. 5 is a left side elevational view;

FIG. 6 is a right side elevational view; and,

FIG. 7 is a perspective view.

The broken lines in the drawing are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a dual blade ski runner, as shown and described. 